There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.
Now all your friends have one apple each, yet there is an apple remaining in the basket.
How?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

There's a day, that comes around once a year.
To celebrate the man, you hold dear.
He gave you life, love and will pick you up if you fall.
When it comes to guys like him, He's the best of all.
Who is he?

Can you place three balls such that the equation shown in the picture holds true?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

I can sizzle like bacon,
I am made with an egg,
I have plenty of backbone, but lack a good leg,
I peel layers like onions, but still remain whole,
I can be long, like a flagpole, yet fit in a hole.

How can you take 2 from 5 and leave 4?